Any free swimming acaleph; a jellyfish.
The bell-shaped, sexually mature stage of cnidarians, especially scyphozoans (jellyfish) which spend most of their life cycle in the medusa stage.
the sexual stage of Hydrozoa and Scyphozoa.
the bell-shaped swimming form of the cnidarian body plan. Example: a jellyfish
The umbrella-shaped type of jelly.
med-oo-sa i) A jellyfish, ii) a free-swimming sexual form of any coelenterate, having tentacles round the edge of a usu. umbrella-shaped jelly-like body, e.g. a jellyfish.
bell-shaped zooplankton, "jellyfish"
any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans
one of two forms that coelenterates take: is the free-swimming sexual stage in the life cycle of a coelenterate and has a gelatinous umbrella-shaped body and tentacles
a bell-shaped, motile body plan, in which the mouth is directed downward
n. (plural: medusae) One of two main body forms in the life cycle of certain cnidarians, typically domeshaped and free-swimming. Compare to polyp.
In cnidarians, a medusa is an animal with a jellyfish-like shape: an umbrella-shaped body with the mouth facing downwards and surrounded by tentacles. Many cnidarians go through this free-swimming stage as medusae in their life cycle.
The floating, flattened, mouth-down version of the cnidarian body plan. The alternate form is the polyp. megapascal (MPa)( meg-uh-pass- kal) A unit of pressure equivalent to 10 atmospheres of pressure.
The motile bell-shaped form of body plan in cnidarians; e.g., jellyfish.
the free-swimming stage in the life cycle of cnidarians (Phylum Cnidaria). Examples are jellyfish. the free-swimming stage in the life cycle of cnidarians (synapomorphy of Phylum Cnidaria). Examples are jellyfish.
In biology, a medusa (also known as a hydromedusa) is a form of cnidarian in which the body is shortened on its principal axis and broadened, sometimes greatly, in contrast with the hydroid or polyp. Medusae vary from bell-shaped to the shape of a thin disk, scarcely convex above and only slightly concave below. The upper or aboral surface is called the exumbrella and the lower surface is called the subumbrella; the mouth is located on the lower surface, which may be partially closed by a membrane extending inward from the margin (called the velum).